Helen, age $28,$ earns $$4980$ per month. Every month she saves $$450.$ Additionally, she has $$2640$ in

outstanding credit cards and makes a $$220$ monthly payment on these cards. What is Helen's approximate

savings ratio?

$6\mathrm{.}02\%.$

$9\mathrm{.}04\%.$

$13\mathrm{.}46\%.$

$4\mathrm{.}42\%.$